Endless band knife



(No Model.) i I J. A. KAY.

BNDLESS BAND KNIPE.

No. 286.706. Patented Oct. 16), 1883.

nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn c PATENT OFricE.

JOSHUA A. KAY, OF

MELBOURNE, vicromA, AssIGNon or oNn-HALF ro DAVID BEATH, or sAMn rLAcn.

ENDLESS BAND-KNIFE.

SPECIFICATION forming part of Letters Patent No. 286,'706, dated October16, 1883.

Application filed April 16, 1883. (No model.) I'atented in Victoria May19,182,No. 3,223; in South Australia August 22,1882,

No. 270, and'in New South W'ales October 27, 1852. i

.To a/ZZ whom it may conccrn:

Be it known that I, JosHUA ALEXANDER KAY, a subject of the Queen ofGreat Britain,

succession of curves, or a series of angles, or

partly curved and partly angled,or, in fact, any line not being astraight line, which will enable the knife to give a succession ofdrawing cuts, instead of the one continuous cut of the baml-knives nowin use.

The object of this invention is to reduceithe friction and lessen theheat produced'by such inotion of band-knives. This I accomplish bymaking a series of holes in the widest portion i of such knives, whichholes also have the effect of carrying along with them any loose refuseand discharging it as it emerges from the material through which it ispassing.

' I sometimes make my band-knives double edged, so that when one edge isworn out it can be reversed, and what was formerly the edge of the knifebecomes the back.

In my drawings I have shown three different illustrations of the way inwhich my invention canbe carried into effect. Figure 1 shows aband-knife with a wave edge; Fig. 2, a band-knife with its edgedescribing a succession' of curves, and Fig. 3 with its edge describinga series of angles, while Figs. 4 and 5 are cross-sections of the knifewith chisel edge and knife edge. The blade of the knife is ineach casemarked A, and the holes therein a a. It will be noticed that in allthese illus- In making my endless band-knives I take a narrow strip orband of steel and stamp out of it at intervals along the entire lengthof one or bot-h of its edges aseries of curv es or notches orindentations, as shown at d, Fig. 1. The effect of this is to leave theblade with a succession of alternately convex and concave surfacesforming a wave edge. This wave edge is then filed or ground down sharp,like a chisel, as shown in cross section; or it might be notched orindented and beveled during the process of rolling, Fig. 4; or it maytake the form shown in cross-section at Fig. 5. The ends of the band orstrip are then brazed together to form an endless flexible knife.

The holes (L may be punched or stamped out at the same time that thewave or notched or indented cutting-edge is formed, and either before orafter brazing, or otherwise fastening together the cnds of the strip orband to form the endless band-knife. g

WVhat I claim as my invention, and desire to secure by Letters Patent,is-

An endless band-knife having awaved cutting edge or edges,substant-ia-lly as set forth, and perforations a, for the purpose ofreducing friction and preventing heating, as described. v

J OSHUA ALEXANDER KAY. IVitnesses:

' EDWD. Tyrim WALTER SMYTHE BAYsroN.

trations the cutting-edge is made interstitial. g

